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Diffstat (limited to 'exercises/006_strings.zig')
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diff --git a/exercises/006_strings.zig b/exercises/006_strings.zig new file mode 100644 index 0000000..6258816 --- /dev/null +++ b/exercises/006_strings.zig @@ -0,0 +1,48 @@ +// +// Now that we've learned about arrays, we can talk about strings. +// +// We've already seen Zig string literals: "Hello world.\n" +// +// Zig stores strings as arrays of bytes. +// +// const foo = "Hello"; +// +// Is the same as: +// +// const foo = [_]u8{ 'H', 'e', 'l', 'l', 'o' }; +// +const std = @import("std"); + +pub fn main() void { + const ziggy = "stardust"; + + // (Problem 1) + // Use array square bracket syntax to get the letter 'd' from + // the string "stardust" above. + const d: u8 = ziggy[???]; + + // (Problem 2) + // Use the array repeat '**' operator to make "ha ha ha ". + const laugh = "ha " ???; + + // (Problem 3) + // Use the array concatenation '++' operator to make "Major Tom". + // (You'll need to add a space as well!) + const major = "Major"; + const tom = "Tom"; + const major_tom = major ??? tom; + + // That's all the problems. Let's see our results: + std.debug.print("d={u} {s}{s}\n", .{ d, laugh, major_tom }); + // Keen eyes will notice that we've put 'u' and 's' inside the '{}' + // placeholders in the format string above. This tells the + // print() function to format the values as a UTF-8 character and + // UTF-8 strings respectively. If we didn't do this, we'd see '100', + // which is the decimal number corresponding with the 'd' character + // in UTF-8. (And an error in the case of the strings.) + // + // While we're on this subject, 'c' (ASCII encoded character) + // would work in place for 'u' because the first 128 characters + // of UTF-8 are the same as ASCII! + // +} |